class HttpClient {
Doctors believe her sepsis might have been caused by something as innocent as a lick from her dog on a small cut or scratch.，推荐阅读heLLoword翻译官方下载获取更多信息
time.sleep(2 ** attempt) # 指数退避。业内人士推荐WPS官方版本下载作为进阶阅读
"The beverage industry is actually a system of small, independent businesses, some of which have been in the same families for generations," a spokesman for the American Beverage Association tells the BBC. "Many produce brands that have been around for more than 100 years."